Other Key combinations

GNU/Linux shells have many shortcut keys which you can use to speed up your work, below is a rough list of some (also see
CTRL-R
in the history section of the commands, over here, the Section called The command-line history).

CTRL-D

the “end-of-file” (EOF) key combination can be used to quickly log out of any terminal.
CTRL-D
is also used in programs such as “at” to signal that you have finished typing your commands (the EOF command).

CTRL-Z

key combination is used to stop a process. It can be used to put something in the background temporarily.

For example, if you were editing a file with vim or emacs just press
CTRL-Z
to regain control of the terminal do what you want and then type fgto bring it back.